China berries, also known as Chinese privet, are toxic to horses. They contain a substance called oleuropein, which can cause various symptoms like:
* Gastrointestinal upset: diarrhea, colic
* Weakness
* Depression
* Tremors
* Kidney damage
Even small amounts of china berries can be dangerous for horses, so it's crucial to keep them away from these plants.
If you suspect your horse has ingested china berries, it's important to contact your veterinarian immediately.